Abstract: Provided is an imaging device capable of further suppressing color mixing between pixels. The imaging device includes: a semiconductor substrate provided with a photoelectric conversion unit for each of pixels two-dimensionally arranged; a color filter provided for each of the pixels on the semiconductor substrate; an intermediate layer provided between the semiconductor substrate and the color filter; and a low refraction region provided between the pixels by separating at least the color filter and the intermediate layer for each of the pixels, the low refraction region having a refractive index lower than a refractive index of the color filter.

Abstract: Provided are a method and a device for descaling that make it possible to effectively remove oxide scale from the surface of a metal wire. The descaling includes spraying the surface of a metal wire (W) with a mixture (9) of water and hard particles from a plurality of nozzles (8). The plurality of nozzles (8) include a plurality of self-cleaning nozzles that spray at a spray angle (?) of 90° or smaller with respect to the metal wire (W). The spray angle (?) is the angle formed by the central axis (X) of the spraying and a vector (Vt) indicating a conveyance direction that originates at the intersection (P) of the central axis (X) and the metal wire surface.

Abstract: To provide a steel wire rod having a lubricating coating, which can achieve both corrosion resistance such as long-term rust prevention property, and excellent appearance after heading. The steel wire rod of the present disclosure includes a lubricating coating on a surface thereof, wherein the lubricating coating includes silicon (A), tungsten (B) and an alkali metal salt of fatty acid (C), a dry mass ratio of (B)/(A) is in a range of 1.3 to 18 and a dry mass ratio of (C)/{(A)+(B)} is in a range of 0.14 to 2.0, and the lubricating coating contains no phosphorus.

Abstract: Provided are a method and a device for descaling that make it possible to effectively remove oxide scale from the surface of a metal wire. The descaling includes spraying the surface of a metal wire (W) with a mixture (9) of water and hard particles from a plurality of nozzles (8). The plurality of nozzles (8) include a plurality of self-cleaning nozzles that spray at a spray angle (?) of 90° or smaller with respect to the metal wire (W). The spray angle (?) is the angle formed by the central axis (X) of the spraying and a vector (Vt) indicating a conveyance direction that originates at the intersection (P) of the central axis (X) and the metal wire surface.

Abstract: Provided is a water-soluble rubricating agent for plastic working being capable of forming a lubricating film having lubricity and seizure resistance equal to or greater than a phosphorus-containing chemical conversion treatment film, having excellent corrosion resistance, and also having good film adhesion, without including phosphorus in the film. This water-soluble non-phosphorus lubricating agent for plastic working includes an inorganic solid lubricant as component A, a wax as component B, and a water-soluble inorganic metal salt as component C, wherein the mass ratio (component A/component B) of solid content for component A to solid content for component B is 0.1 to 5, and the mass percentage (component C/(component A+component B+component C)) of solid content for component C to total solid content for components A, B and C is 1 to 30%.

Abstract: Provided is a water-soluble rubricating agent for plastic working being capable of forming a lubricating film having lubricity and seizure resistance equal to or greater than a phosphorus-containing chemical conversion treatment film, having excellent corrosion resistance, and also having good film adhesion, without including phosphorus in the film. This water-soluble non-phosphorus lubricating agent for plastic working includes an inorganic solid lubricant as component A, a wax as component B, and a water-soluble inorganic metal salt as component C, wherein the mass ratio (component A/component B) of solid content for component A to solid content for component B is 0.1 to 5, and the mass percentage (component C/(component A+component B+component C)) of solid content for component C to total solid content for components A, B and C is 1 to 30%.